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Article History

Received: 1 March 2018

Accepted: 30 July 2018

First Online: 8 August 2018

Ethics approval and consent to participate

: Umbilical cords were obtained from new mothers after they had signed an informed consent form in compliance with French national legislation relating to human sample collection, manipulation, and personal data protection. The collection protocol was approved by Nancy Hospital’s ethics committee and the French ministry for research (No. DC-2014-2114).Experiments were performed in line with the National Institute of Health guidelines on the Use of Laboratory Animals and were approved by the University Animal Care Committee (Comité d’Éthique Lorrain en Matière d’Expérimentation Animale (CELMEA-CE2A-66) authorization no. APAFIS5674-201606141602993).

: The authors declare that they have no competing interests.

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